Linux
Linux Red Hat Resize VM resize2fs - 找不到有效的文件系統超級塊
我正在嘗試將 Linux Red Hat 虛擬機的大小增加 10Gig。這只是在我試圖弄清楚的我創建的測試伺服器上。
我使用此命令將 VM 增加了 10 gig
$$ root@rh01 images $$# qemu-img resize TestServer.img +10G 圖片調整大小。 然後我按照這個連結https://gist.github.com/larsks/3933980完成
我一直走到最後一個命令是 resize2fs 的地方，我得到了這個錯誤
[root@TestServer bmac]# resize2fs /dev/vda2 resize2fs 1.41.12 (17-May-2010) resize2fs: Device or resource busy while trying to open /dev/vda2 Couldn't find valid filesystem superblock.以下是我採取的所有步驟：
[root@rh01 admin]# virt-df -h /home/admin/images/TestServer.img Filesystem Size Used Available Use% TestServer.img:/dev/sda1 484M 63M 396M 14% TestServer.img:/dev/vg_template/lv_root 40G 4.0G 34G 10% [root@rh01 admin]# virt-list-partitions -lh /home/admin/images/TestServer.img /dev/sda1 ext4 500.0M /dev/sda2 pv 48.3G [root@rh01 admin]# cd images/ [root@rh01 images]# qemu-img resize TestServer.img +10G Image resized. [root@rh01 images]# virt-df -h /home/admin/images/TestServer.img Filesystem Size Used Available Use% TestServer.img:/dev/sda1 484M 63M 396M 14% TestServer.img:/dev/vg_template/lv_root 40G 4.0G 34G 10% [root@rh01 images]# virt-list-partitions -lh /home/admin/images/TestServer.img /dev/sda1 ext4 500.0M /dev/sda2 pv 48.3G [root@rh01 images]# ls -l TestServer.img -rw-------. 1 root root 63166218240 May 1 08:55 TestServer.img [root@rh01 images]# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/mapper/vg_rh01-lv_root 51606140 7845612 41139088 17% / tmpfs 99166276 296 99165980 1% /dev/shm /dev/sda1 495844 92445 377799 20% /boot /dev/mapper/vg_rh01-lv_home 3305120248 494277716 2642952000 16% /home [root@rh01 images]# df -B 4k Filesystem 4K-blocks Used Available Use% Mounted on /dev/mapper/vg_rh01-lv_root 12901535 1961403 10284772 17% / tmpfs 24791569 74 24791495 1% /dev/shm /dev/sda1 123961 23112 94450 20% /boot /dev/mapper/vg_rh01-lv_home 826280062 123569429 660738000 16% /home [root@rh01 images]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_rh01-lv_root 50G 7.5G 40G 17% / tmpfs 95G 296K 95G 1% /dev/shm /dev/sda1 485M 91M 369M 20% /boot /dev/mapper/vg_rh01-lv_home 3.1T 472G 2.5T 16% /home Boot VM and Login [bmac@TestServer ~]$ su Password: [root@TestServer bmac]# cd [root@TestServer ~]# fdisk /dev/vda WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u'). Command (m for help): p Disk /dev/vda: 63.2 GB, 63166218240 bytes 16 heads, 63 sectors/track, 122392 cylinders Units = cylinders of 1008 * 512 = 516096 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000cd4ad Device Boot Start End Blocks Id System /dev/vda1 * 3 1018 512000 83 Linux Partition 1 does not end on cylinder boundary. /dev/vda2 1018 101588 50686976 8e Linux LVM Partition 2 does not end on cylinder boundary. Command (m for help): d Partition number (1-4): 2 Command (m for help): n Command action e extended p primary partition (1-4) p Partition number (1-4): 2 First cylinder (1-122392, default 1): 1018 Last cylinder, +cylinders or +size{K,M,G} (1018-122392, default 122392): 122392 Command (m for help): p Disk /dev/vda: 63.2 GB, 63166218240 bytes 16 heads, 63 sectors/track, 122392 cylinders Units = cylinders of 1008 * 512 = 516096 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000cd4ad Device Boot Start End Blocks Id System /dev/vda1 * 3 1018 512000 83 Linux Partition 1 does not end on cylinder boundary. /dev/vda2 1018 122392 61172544 83 Linux Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. WARNING: Re-reading the partition table failed with error 16: Device or resource busy. The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8) Syncing disks. [bmac@TestServer ~]$ su Password: [root@TestServer bmac]# df -h / Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_template-lv_root 40G 4.0G 34G 11% / [root@TestServer bmac]# resize2fs /dev/vda2 resize2fs 1.41.12 (17-May-2010) resize2fs: Device or resource busy while trying to open /dev/vda2 Couldn't find valid filesystem superblock. [root@TestServer bmac]# resize4fs /dev/vda2 bash: resize4fs: command not found [root@TestServer bmackenzie]# resize2fs /dev/mapper/vg_template-lv_root resize2fs 1.41.12 (17-May-2010) The filesystem is already 10622976 blocks long. Nothing to do! [root@TestServer bmac]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_template-lv_root 40G 4.0G 34G 11% / tmpfs 3.9G 80K 3.9G 1% /dev/shm /dev/vda1 485M 64M 397M 14% /boot感謝瘋狂帽匠的資訊。這是我執行的對我有用的確切步驟，以防有人在尋找這個
[root@TestServer bmac]# pvresize /dev/vda2 Physical volume "/dev/vda2" changed 1 physical volume(s) resized / 0 physical volume(s) not resized [root@TestServer bmac]# lvextend /dev/mapper/vg_template-lv_root -L +10G Extending logical volume lv_root to 50.52 GiB Logical volume lv_root successfully resized [root@TestServer bmackenzie]# resize2fs /dev/mapper/vg_template-lv_root resize2fs 1.41.12 (17-May-2010) Filesystem at /dev/mapper/vg_template-lv_root is mounted on /; on-line resizing required old desc_blocks = 3, new_desc_blocks = 4 Performing an on-line resize of /dev/mapper/vg_template-lv_root to 13244416 (4k) blocks. The filesystem on /dev/mapper/vg_template-lv_root is now 13244416 blocks long.
如果沒有記錯的話，您需要執行許多步驟。
首先，您需要使用
pvresize將現有 PV 擴展到新的分區頂部。然後您需要使用
lvresize或lvextend將現有的 LV 卷調整為放大的 PV。然後您可以使用
resize2fs將文件系統的大小調整為新的放大卷。